<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8" />
		<title>test</title>
	</head>
	<body>
		<script type="text/javascript" >

			function extend(){
				function VueComponent(){
					console.log(1)
				}
				return VueComponent
			}

			let x = extend()
			let y = extend()

			console.log(x)
			console.log(y)
			console.log(x === y)

			
		</script>
	</body>
</html>